2065/2165/2071/2171 are pretty much the same cases, minute differences but not enough to prevent swapping.
I think the 372 case was beefed up inside behind the bar pad area. There were some issues here in the western U.S. with the 371 cases cracking
through the bar pad when running longer bars. I'm not sure if that applied to the Jonsered equivalents. The 371 case wouldn't be an issue for most
casual users or landscaping and tree services. It was mainly professional fallers here running 32" bars that had the problem.